Automatic start-stop double-lane dust suppression spraying device for coal car

Abstract

The invention relates to the technical field of coal dust suppression, in particular to an automatic start-stop steam coal car double-lane dust suppression spraying device which comprises two portal frames, a license plate recognition barrier gate all-in-one machine, a vertical plate and a control room. Two license plate recognition barrier gate all-in-one machines are arranged on the rear sides of the two portal frames, the number of the vertical plates is four, the four vertical plates are arranged on the rear sides of the two license plate recognition barrier gate all-in-one machines correspondingly, infrared sensors are fixedly installed on the side faces of the upper ends of the four vertical plates correspondingly, and the control chamber is in an L shape. According to the double-lane dust suppression spraying device for the automatic start-stop coal car, double-lane simultaneous operation can be achieved, compared with traditional single-lane equipment, the passing efficiency is improved by more than 50%, the problem of port coal car congestion is effectively avoided, manual intervention is not needed, the operation efficiency is improved by 80% compared with manual control, and meanwhile potential safety hazards of manual operation are eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of coal dust suppression, in particular to an automatic start-stop coal truck dual-lane dust suppression spraying device. Background Art

[0002] In the coal transportation sector, dust pollution and material loss during transportation by trucks carrying coal have long been a problem. Ganqimaodu Port, a key coal transportation hub, is prone to generating large amounts of dust during transportation due to the exposed material from coal trucks transporting coal from outside the controlled warehouse and from Mongolia. This not only pollutes the atmosphere but also leads to the loss of coal resources. Statistics show that under traditional transportation methods, the loss rate of coal during transportation is high, and dust pollution has become a major source of air pollution in the port area, necessitating the urgent need for efficient dust suppression technologies for comprehensive control.

[0003] To reduce air and environmental pollution during coal truck transportation, traditional methods involve manually applying tarpaulins to prevent dust and coal spillage. However, manual operation is inefficient, impacting coal delivery efficiency. Furthermore, manual tarpaulin application poses safety risks when working at height, especially with large numbers of coal trucks at ports. The safety and timeliness of manual operation are difficult to guarantee. While some "liquid tarpaulin" technologies are commercially available for coal trucks transporting outside of controlled depots, they do not cover Mongolian coal trucks entering the customs. The need to remove the tarpaulins after entering Mongolia leads to significant dust pollution along the route from customs to the controlled depot. Existing dust suppression equipment often relies on manual or simple mechanical controls, failing to automatically adjust spraying based on vehicle height, position, and other parameters. For example, the inability to accurately identify the carriage and driver's cab can lead to inaccurate spraying, resulting in wasted dust suppressant and ineffective dust suppression. Furthermore, single-lane operation can easily cause traffic congestion and fail to meet the high traffic volume of coal trucks at the port. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention discloses a dual-lane dust suppression spraying device for an automatic start-stop coal truck. The technical solution adopted is, comprising a gantry, a license plate recognition barrier integrated machine, a vertical plate and a control room. There are two gantries, and three laser ranging sensors are fixedly installed on the bottom of the two gantries. Two license plate recognition barrier integrated machines are arranged on the rear sides of the two gantries. There are four vertical plates, and the four vertical plates are respectively arranged on the rear sides of the two license plate recognition barrier integrated machines. Infrared sensors are fixedly installed on the sides of the upper ends of the four vertical plates. The control room is L-shaped, and two control modules are fixedly installed inside the control room. Two height adjustment mechanisms are symmetrically installed on the step surface of the control room. The two height adjustments are respectively fixedly connected to two spray frames, and the two spray frames are equipped with spraying mechanisms for spraying dust suppressants.

[0005] As a preferred technical solution of the present invention, the height adjustment mechanism includes a fixed cylinder, which is rotatably mounted on the step surface of the control room, and a guide rod is slidably installed in the fixed cylinder. The upper end of the guide rod is fixedly connected to the bottom of one end of the spray rack, and the ear plate on the side of the lower end of the fixed cylinder is rotatably connected to one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is fixedly connected to the bottom of one end of the spray rack.

[0006] As a preferred technical solution of the present invention, the spraying mechanism includes a fixed pipe, which is fixedly installed inside the other end of the spray rack, and the opposite side surfaces inside the spray rack are fixedly connected to the two ends of the spray pipe. A plurality of nozzles are fixedly installed on the side surfaces of the spray pipe, and the nozzles are connected to the interior of the spray pipe. A through hole is opened on the side surface of the fixed pipe to cooperate with the nozzles.

[0007] As a preferred technical solution of the present invention, the spraying mechanism also includes a liquid storage tank, which is fixedly installed in the cavity of the control chamber. The two liquid outlets on the side of the liquid storage tank are respectively connected to one end of two hoses, and the other ends of the two hoses are respectively connected to one end of the spraying pipe through the through holes on the sides of the two fixed cylinders. Infusion pumps are installed on the two hoses, and the two infusion pumps are respectively fixedly installed on the two sides of the liquid storage tank.

[0008] As a preferred technical solution of the present invention, a pull-rope displacement sensor is fixedly installed on the side surface of the upper end of the fixed cylinder, and the pull rope of the pull-rope displacement sensor is fixedly connected to the bottom of the spraying frame.

[0009] As a preferred technical solution of the present invention, the control module is a combination of a host computer and a PLC. The host computer is used to control the license plate recognition barrier integrated machine, and the PLC is used to receive data from the laser ranging sensor, infrared sensor and rope displacement sensor and control the operation of the hydraulic cylinder and infusion pump.

[0010] As a preferred technical solution of the present invention, the license plate recognition barrier integrated machine is located 15 meters behind the gantry, one of the vertical plates is provided 1 meter behind the license plate recognition barrier integrated machine, and another vertical plate is provided 2 meters behind the license plate recognition barrier integrated machine, and the other vertical plate is located in front of the spray rack.

[0011] Beneficial effects of the present invention: 1. The present invention adopts a double-swing arm double-lane spraying structure to achieve simultaneous operation of two lanes. Compared with traditional single-lane equipment, the traffic efficiency is improved by more than 50%, effectively avoiding the congestion of coal trucks at the port. Through the coordinated work of the laser ranging sensor and the infrared sensor, the device can automatically detect the height of the vehicle and the position of the carriage. When the two infrared sensors detect the carriage at the same time, the spraying is started and automatically stopped when leaving, avoiding spraying on the cab, and the utilization rate of the agent is increased by more than 30%. At the same time, the hydraulic lifting mechanism can automatically adjust the height of the spray frame according to the ranging sensor data, adapting to different types of coal trucks (such as dump trucks, semi-trailers, etc.), to ensure that the dust suppressant evenly covers the surface of the material.

[0012] 2. The system adopts a "host computer + PLC" central control system. The host computer controls the license plate recognition barrier integrated machine to realize vehicle identity recognition and lift the barrier to release the vehicle. The PLC receives sensor data and controls the lifting and lowering of the spraying frame, spraying of pesticides and other actions. No human intervention is required, and the operating efficiency is improved by 80% compared with manual control, while eliminating the safety hazards of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0014] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the gantry structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the lifting mechanism structure of the present invention;

[0017] Figure 5 Schematic diagram of the spraying mechanism structure of the present invention;

[0018] Figure 6 This is a schematic diagram of the control room structure of the present invention;

[0019] Figure 7 It is a schematic structural diagram of the liquid storage tank of the present invention.

[0020] In the figure: 1 gantry, 2 license plate recognition barrier integrated machine, 3 vertical board, 4 control room, 5 spraying frame, 6 control module, 7 height adjustment mechanism, 71 fixed cylinder, 72 guide rod, 73 hydraulic cylinder, 8 spraying mechanism, 81 fixed pipe, 82 nozzle, 83 spraying pipe, 84 liquid storage tank, 85 infusion pump, 86 hose, 9 laser ranging sensor, 10 infrared sensor, 11 rope displacement sensor. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figures 1 to 7 As shown, the present invention discloses an automatic start-stop coal truck dual-lane dust suppression spraying device, which adopts the technical solution of comprising a gantry 1, a license plate recognition barrier integrated machine 2, a vertical plate 3 and a control room 4, wherein two gantries 1 are provided, and three laser ranging sensors 9 are fixedly installed on the bottom of the two gantries 1, two license plate recognition barrier integrated machines 2 are provided on the rear side of the two gantries 1, four vertical plates 3 are provided, and the four vertical plates 3 are respectively provided on the rear side of the two license plate recognition barrier integrated machines 2, and infrared sensors 10 are fixedly installed on the side surfaces of the upper ends of the four vertical plates 3, and the control room 4 is L-shaped, and two control modules 6 are fixedly installed in the control room 4, and the control module 6 is a combination of a host computer and a PLC. Used to control the license plate recognition barrier machine 2, the PLC is used to receive data from the laser ranging sensor 9, the infrared sensor 10 and the pull rope displacement sensor 11 and control the operation of the hydraulic cylinder 73 and the infusion pump 85. Two height adjustment mechanisms 7 are symmetrically installed on the step surface of the control room 4. The two height adjustments 7 are fixedly connected to the two spray racks 5 respectively. The two spray racks 5 are equipped with a spraying mechanism 8 for spraying dust suppressants. The license plate recognition barrier machine 2 is located 15 meters behind the gantry 1. One of the vertical plates 3 is provided at 1 meter behind the license plate recognition barrier machine 2. Another vertical plate 3 is provided at 2 meters behind the license plate recognition barrier machine 2. The other vertical plate 3 is located in front of the spray rack 5.

[0023] The height adjustment mechanism 7 includes a fixed cylinder 71, which is rotatably mounted on the step surface of the control room 4. A guide rod 72 is slidably mounted in the fixed cylinder 71. The upper end of the guide rod 72 is fixedly connected to the bottom of one end of the spray rack 5. The ear plate on the side of the lower end of the fixed cylinder 71 is rotatably connected to one end of the hydraulic cylinder 73. The other end of the hydraulic cylinder 73 is fixedly connected to the bottom of one end of the spray rack 5. A pull rope displacement sensor 11 is fixedly mounted on the side of the upper end of the fixed cylinder 71. The pull rope of the pull rope displacement sensor 11 is fixedly connected to the bottom of the spray rack 5. The spraying mechanism 8 includes a fixed tube 81, which is fixedly mounted inside the other end of the spray rack 5, and the opposite sides inside the spray rack 5 are fixedly connected to the two ends of the spray pipe 83. Several nozzles 82 are fixedly mounted on the side of the spray pipe 83, and the nozzles 82 are connected to the interior of the spray pipe 83. A through hole that matches the nozzle 82 is opened on the side of the fixed tube 81. The spraying mechanism 8 also includes a liquid storage tank 84, which is fixedly mounted in the cavity of the control chamber 4. The two liquid outlets on the side of the liquid storage tank 84 are respectively connected to one end of two hoses 86, and the other ends of the two hoses 86 are respectively connected to one end of the spray pipe 83 through the through holes on the sides of the two fixed cylinders 81. An infusion pump 85 is installed on each of the two hoses 86, and the two infusion pumps 85 are respectively fixedly mounted on the two sides of the liquid storage tank 84.

[0024] The working principle of the present invention is as follows: when a coal car enters the dust suppression operation area at the port, it first passes through the gantry 1. The three laser ranging sensors 9 of the gantry 1 start working, and the height of the highest point of the vehicle is calculated by measuring the reflection time. The data is transmitted to the PLC controller in real time. The vehicle continues to move forward to the license plate recognition barrier integrated machine 2 15 meters behind the gantry 1. The upper computer system recognizes the license plate information and records it, and at the same time controls the barrier to lift the bar to release it. When the vehicle passes, the two infrared sensors 10 cooperate to detect. If signals are detected at the same time, it is determined to be the carriage area and the spraying command is triggered. If only a single sensor detects a signal, it is determined to be the cab or the rear of the vehicle, and the spraying is not triggered to avoid waste of reagents. After receiving vehicle height data from the laser ranging sensor 9, the PLC calculates the optimal operating height of the spraying boom 5 and sends a command to the height adjustment mechanism 7. Hydraulic cylinder 73 pushes guide rod 72 inside fixed cylinder 71 up and down, driving the spraying boom 5 up and down. A pull-rope displacement sensor 11 monitors the height of the spraying boom 5 in real time and feeds this data back to the PLC, forming a closed-loop control system to ensure that the spraying distance between the nozzle 82 and the coal pile surface (approximately 1-1.5 meters) is maintained. When infrared sensors A and B simultaneously detect the carriage signal, the PLC sends a start command to the infusion pump 85. The dust suppressant in the liquid tank 84 is transported to the spray pipe 83 via a hose 86 and sprayed through the nozzle 82 onto the coal pile in the carriage, forming a solidified film on the coal. When the vehicle passes the front infrared sensor 10, the PLC instructs the infusion pump 85 to stop, and spraying ends. Throughout this process, the nozzle operates only in the carriage area, with no spraying occurring in the driver's cab area, improving the agent utilization rate by over 30%. The device adopts a double spraying frame and 5 double lane structure, which can meet the spraying operations of two lanes at the same time and meet the traffic needs of thousands of coal trucks per day at the port.

[0025] Example 2

[0026] 1. Application Scenarios

[0027] Starting in October 2023, six dual-swing-arm, dual-lane dust suppression sprayers were put into operation at the Ganqimaodu Port. These were installed in the passageway where Mongolian coal trucks enter the border (500 meters from the customs inspection area). Approximately 2,000 Mongolian coal trucks pass through this area daily. The need to remove the tarpaulin after entering the customs has led to severe dust pollution on the 3-kilometer section of road from the customs to the supervision depot, resulting in a coal loss rate of approximately 3%.

[0028] II. Equipment Configuration: Spraying Devices: Six double-swing arm, two-lane spraying devices, each equipped with two gantries, six laser rangefinders (three per gantry), two license plate recognition barrier gate systems (one per lane), four infrared sensors (two per lane), an L-shaped control room, and a hydraulically-operated spraying frame. Auxiliary Equipment: One vacuum truck for regular dust removal at the entrance to the customs; a 5,000L liquid storage tank equipped with two infusion pumps (one per lane) ensures a continuous supply of dust suppressant.

[0029] 3. Workflow

[0030] (1) Vehicle inspection stage

[0031] When Mongolian coal trucks enter the customs channel, they first pass through the gantry. The three laser ranging sensors inside the gantry detect the height of the highest point of the vehicle in real time, and the data is synchronously transmitted to the PLC controller.

[0032] After the vehicle travels 15 meters, it reaches the license plate recognition barrier integrated machine. The upper computer recognizes and records the license plate information, and controls the barrier to lift the bar to let the vehicle pass.

[0033] (2) Spraying operation stage

[0034] The hydraulic lifting mechanism automatically adjusts the spraying boom height (1.2 meters from the coal pile surface) based on laser ranging data. A pull-rope displacement sensor provides real-time height feedback to ensure the optimal spraying distance between the nozzle and the coal pile. After passing through the barrier, the vehicle passes an infrared sensor located 1 meter from the barrier and another 2 meters from the barrier. When both sensors simultaneously detect a signal from the carriage (cab length is approximately 2 meters, carriage length approximately 8 meters), the cab moves in front of the spraying boom, positioning the carriage below it, and the PLC triggers the spray command.

[0035] The infusion pump is started, and the dust suppressant in the storage tank is transported to the spray pipe through a hose, and is evenly sprayed on the surface of the coal in the carriage through the nozzle, forming a solidified film with a thickness of about 1-2 mm. It takes about 8 seconds per car.

[0036] (3) Intelligent start-stop stage

[0037] When the vehicle travels beyond the detection range of the infrared sensor near the gantry, the PLC instructs the infusion pump to stop working and the spraying ends to avoid wasting dust suppressant.

[0038] After the following vehicle completes the height measurement, the spraying frame automatically rises and falls to the corresponding height, waiting for the next vehicle to enter the spraying area to achieve continuous operation.

[0039] IV. Implementation Effect

[0040] (1) Environmental benefits

[0041] Dust pollution has been reduced: PM10 concentration on the road to the customs has dropped from 800μg / m 3 Reduced to 200 μg / m 3 Below, it meets the second level standard of the "Ambient Air Quality Standard".

[0042] Coal loss is reduced: the transportation loss rate has dropped from 3% to below 0.8%. Based on the port's average daily coal transportation of 50,000 tons, the daily coal loss is reduced by 110 tons, and the annual cost savings are approximately 8 million yuan (coal unit price 600 yuan / ton).

[0043] (2) Operational efficiency

[0044] Improved traffic capacity: 6 lanes operate simultaneously, and the traffic efficiency of a single lane reaches 300 vehicles per hour, which is 50% higher than that of traditional single-lane equipment, completely solving the traffic congestion problem at the port.

[0045] Improved operating efficiency: The time for manual tarpaulin covering is shortened from 2 minutes per vehicle to 15 seconds per vehicle with automatic spraying, and the overall factory efficiency is increased by 80%.

[0046] (3) Safety performance

[0047] Eliminate manual hidden dangers: Replace manual high-altitude tarpaulin operations, and the failure rate has dropped by 100% compared to the same period last year. Reliable intelligent control: The "host computer + PLC" system achieves fully automated operation, with a fault alarm response time of less than 10 seconds and an equipment failure rate of less than 0.5%.

[0048] 5. Extended Application

[0049] The device is also used on coal trucks transported outside the port supervision warehouse, achieving dual dust suppression of "spraying upon entry + re-inspection upon exiting the warehouse", further consolidating the control effect.

[0050] Combined with Internet of Things technology, the host computer monitors the spraying data of each lane (such as spraying volume and vehicle flow) in real time, generates a dust control effect analysis report, and provides data support for subsequent optimization.

[0051] The dust suppressant sprayed in the present invention is a dust suppressant prepared by adopting a coal dust suppressant and a preparation method thereof disclosed in the authorization announcement number CN104559932B.

[0052] The circuit connection involved in the present invention is a common method used by those skilled in the art, and technical inspiration can be obtained through limited experiments. It belongs to the widely used existing technology.

[0053] Components not described in detail herein are prior art.

[0054] Although the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. An automatic start-stop coal truck dual-lane dust suppression spraying device, characterized in that: The invention comprises a gantry (1), a license plate recognition barrier integrated machine (2), a vertical plate (3) and a control room (4), wherein two gantries (1) are provided, and three laser distance measuring sensors (9) are fixedly installed on the bottom of the two gantries (1), two license plate recognition barrier integrated machines (2) are provided on the rear sides of the two gantries (1), four vertical plates (3) are provided, and the four vertical plates (3) are respectively provided on the rear sides of the two license plate recognition barrier integrated machines (2), and infrared sensors (10) are fixedly installed on the side surfaces of the upper ends of the four vertical plates (3), and the control room (4) is L-shaped, and two control modules (6) are fixedly installed in the control room (4), and two height adjustment mechanisms (7) are symmetrically installed on the step surface of the control room (4), and the two height adjustment mechanisms (7) are respectively fixedly connected to two spraying racks (5), and the two spraying racks (5) are each equipped with a spraying mechanism (8) for spraying dust suppressant.

2. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 1 is characterized by: The height adjustment mechanism (7) comprises a fixed cylinder (71), the fixed cylinder (71) being rotatably mounted on a step surface of a control room (4), a guide rod (72) being slidably mounted in the fixed cylinder (71), the upper end of the guide rod (72) being fixedly connected to the bottom of one end of a spraying frame (5), an ear plate on the side surface of the lower end of the fixed cylinder (71) being rotatably connected to one end of a hydraulic cylinder (73), and the other end of the hydraulic cylinder (73) being fixedly connected to the bottom of one end of the spraying frame (5).

3. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 1 is characterized in that: The spraying mechanism (8) includes a fixed pipe (81), which is fixedly mounted inside the other end of the spraying frame (5). The opposite side surfaces inside the spraying frame (5) are fixedly connected to the two ends of the spraying pipe (83). A plurality of spray heads (82) are fixedly mounted on the side surfaces of the spraying pipe (83). The spray heads (82) are connected to the interior of the spraying pipe (83). A through hole is provided on the side surface of the fixed pipe (81) to match the spray heads (82).

4. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 3 is characterized by: The spraying mechanism (8) further comprises a liquid storage tank (84), the liquid storage tank (84) being fixedly mounted in the cavity of the control chamber (4), the two liquid outlets on the side of the liquid storage tank (84) being respectively connected to one end of two hoses (86), the other ends of the two hoses (86) respectively passing through the through holes on the sides of the two fixed cylinders (81) and being connected to one end of the spraying pipe (83), the two hoses (86) being respectively mounted with an infusion pump (85), the two infusion pumps (85) being respectively fixedly mounted on the two sides of the liquid storage tank (84).

5. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 1 is characterized in that: A pull rope displacement sensor (11) is fixedly mounted on the side surface of the upper end of the fixed cylinder (71), and the pull rope of the pull rope displacement sensor (11) is fixedly connected to the bottom of the spraying frame (5).

6. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 5 is characterized by: The control module (6) is a combination of a host computer and a PLC. The host computer is used to control the license plate recognition barrier integrated machine (2), and the PLC is used to receive data from a laser distance sensor (9), an infrared sensor (10), and a pull rope displacement sensor (11) and control the operation of a hydraulic cylinder (73) and an infusion pump (85).

7. The automatic start-stop coal truck dual-lane dust suppression spraying device according to claim 1 is characterized by: The license plate recognition barrier integrated machine (2) is located 15 meters behind the gantry (1), one of the vertical plates (3) is provided 1 meter behind the license plate recognition barrier integrated machine (2), another vertical plate (3) is provided 2 meters behind the license plate recognition barrier integrated machine (2), and the other vertical plate (3) is located in front of the spraying frame (5).

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